Coil binding machine



Dec. 10, 1940. P. E. CHAPMAN COIL BINDING MACHINE A 2 Sheets-Sheet v1 Original Filed Nov. 4, 1935 l'llJ v 2 @in o Q f, U y /z r V/ .i W, L 7 .L M /l u Dec. 10Q 1940.

P. E. CHAPMAN COIL BINDING MACHINE Original Filed Nov. 4, 1935 2 Sheets-Sheet 2 ml I Patented Dec. 10, 1940 UNITED STATES COIL BINDING MACHINE `Penrose E. Chapman, St. Louis, Mo.

substituted for abandoned application Serial No.

48,200, November 4, 1935. This application December 3, 1936, Serial No. 114,091

1 Claim.

This application is a substitute application for application No. 48,200, led November 4, 1935, which was unintentionally abandoned and which was a division of my application No. 519,651, led March 2, 1931, now Patent No. 2,052,764 of Sept. 1, 1936.

In the drawings Figure 1 is a perspective of the coil binding machine.

Figure 2 is a plan of said coil binding machine.

Figure 3 is a plan detail of the binding material guides, feeding elements, actuating cam and cut-off.

Figure 4 is a side elevation of the same subject showing asymmetrical cut-off actuating crank.

Figure 5 is a section through the binding material guides and cross head showing the cam followers for actuating the gripping lingers.

Figure 6 is an end elevation of the cut-off mechanism, follower, and actuating cam.

Figure 7 is a detail of the feeding fingers |31 to |38.

As coils wound on forms without insertions or spools will spring apart as soon as released, it is necessary to tie or bind them in some manner before they are removed from the winding forms.

For binding the coils I may use any elongated material such as soft metal, cloth or paper and some adhesive gum. For brevity I will use the Word paper to include all such materials.

As changes in proportions and functions will enable my invention to use any such binding material and as gummed paper requires possibly the greatest number of functions I am disclosing my invention with a machine proportioned to use it.

After the coils are wound on any winding element particularly those disclosed in thev said patent, such as spindle 58, jig |0|, etc., I accomplish the object of binding the coils as follows:

The paper |50 is guided into papering elementsV by the guides |30 and |30', Figures l, 2, 3 to 6 inclusive.

A crosshead |3| slides in the grooves |32|33 (Figs. 5 and 6) and is actuated through its follower roller |34 by cam |35 that is mounted in any suitable manner, as upon drum |36 carried by a cam shaft. This crosshead |3| carries paper gripping fingers |31, |38, |31 and |38 (Figures 3, 4, 5 and 7). I prefer to carry one element of these gripping fingers |31 and |38 on a tube |39 attached to said crosshead 3| and the other one to the rod |40 passing through said tube |39. To actuate these gripping fingers |31 to |38' I supply crank and roller cam follower |4||42 so placed as to contact with cam surface |45. Connecting rod |43 couples crank |44 to crank |4| to actuate upper gripper fingers |31.

As the gripper 'fingers |31 to |38 recede they open up, pass over the end of the paper |50 and 5 go into the notches |30" in the end of the paper guides |30 and 30', gripping the end of the paper |50 which is maintained at this point, pulling the paper out, and when the wound coil C comes to rest in the rear position of the turretk 2|, 10 carry the paper past the coil C- and into position to be folded thereover. The fingers |31 to |38 release the paper |50 at the proper time under the influence of one of the cam faces |45.

When the proper length of paper has been fed forward as just described the paper feeding elements |30 to |40 dwell for a moment while the paper is cut oi.

For cutting ofi the paper I find it convenient to place two pair of shears |5|-|52 and ISV-|52 one in front of each of the paper guides |30 and |30'. I prefer to form the corresponcling blades for each chute as a part of a frame such as is shown in Figure 6. On these knife frames I form trunnions |5| and |52" for their actuation. It is necessary to actuate all knives |5| to |52' in order that when open they will recede sufficiently to clear the paper gripping lingers |31 to |38.Y

The knives and frames I support by any suitable framed Work |53, |54, situated at the delivering end of the paper guides |30 and |30' and prefer to actuate these knives through connecting rods and |56 by the bell-crank member having unequal arms |51 and |58 which are connected to the trunnions 5| and |52 on said knife frames.

In order that the end of the paper `|50 be not displaced, bent, vkinked or otherwise damaged, it is necessary that one of the knives proceed to the normal plane of the paper and dwell while the other knife continues on its course cutting the paper as it proceeds against the now stationary blade.

To accomplish this end I use said unequal crank arms, connecting the blades |52 and |52 to the short crank arms so that its motion will be negligible as the crank arms passes over the dead center. The other blade |5| and |5| is connected to the longer crank arms which is so phased that said knives |5| and |5| are in motion after the knives |52 and |52 have come to rest.

These cut-off knives are actuated through the rocker shaft |59 crank |60 and its follower roller IBI by the cam |62 secured to the cam shaft 5B.

I Wish to claim: In a coil binding device, the combination of a binding material feed, with cut-off shears which 5 has its knives longitudinally moving in fixed parallel planes, both knives actuated by crank arms of unequal length mounted on a common shaft so proportioned and phased that one knife will proceed to the plane of the material and dwell at an approximately ixed position while the other knife cuts said material off against it.

PENROSE E. CHAPMAN. 

